JEE Main Physics question

PhysicsUnits and MeasurementJEE Main

A student performs an experiment for determination of , , and he commits an error of . For he takes the time of oscillations with the stop watch of least count and he commits a human error of . For which of the following data, the measurement of will be most accurate? [IIT JEE 2006]

Answer: (D)

Solution

The percentage error in is dominated by , which is smallest for the data set with the largest number of oscillations and the smallest

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Question ID VK-157032